Topbow thumbscrew

Nov. 18, 1941 - MB100001 thru Mar. 6, 1942 - MB125809 NO EBAY or COMMERCIAL SALES.
Post Reply
ee.nanan
G-Sergeant Major
G-Sergeant Major
Posts: 156
Joined: Sun Jun 03, 2007 6:35 am
Location:

Topbow thumbscrew

Post by ee.nanan » Wed Dec 13, 2017 5:12 pm

Hi! Can someone help me identify what kind of thumbscrew is the one on the left side? The rusted and smaller one... Thanks in advance..

Image[/URL]


User avatar
DavidA
Equipment Operator, Heavy -2nd Class
Equipment Operator, Heavy -2nd Class
Posts: 6305
Joined: Sat Dec 14, 2002 7:15 am
Location: Millbrae, CA
Contact:

Re: Topbow thumbscrew

Post by DavidA » Thu Dec 14, 2017 9:32 am

Can't say for sure in this case but the early thumbscrews I believe were coarse thread (or was it visa versa?) Anyhow either way, they did come in both thread one for early and the other late. Where that change took place I cannot remember but someone will chime in here I am sure.

Now as for the possibility of a smaller thumbscrew altogether, I have come across smaller ones as well and always wondered what they were for. I had originally thought that someone had them re-cast as repro and they shrunk because they didn't allow for the cooling process.

This is a good question. What were the smaller thumb screws created for? :?
David Aro - USN SEABEES '66-'70
1941 WILLYS MB-104354
1942 WILLYS MB-131350

User avatar
Chuck Lutz
Gee Addict
Posts: 26829
Joined: Wed Jun 28, 2006 7:00 am
Location: Jeep Heaven

Re: Topbow thumbscrew

Post by Chuck Lutz » Thu Dec 14, 2017 11:29 am

Can't see your pic, but the EARLY ones were 5/16" NF (A-2901) and the LATE ones were 3/8" NF (A-3719).
Chuck Lutz

GPW 17963 4/24/42 Chester, PA. USA 20113473 (USA est./Tom W.)
Bantam T3-C 1947

Adam
G-Lieutenant General
G-Lieutenant General
Posts: 4526
Joined: Sun Jul 20, 2003 6:03 pm
Location: Little Meadows PA

Re: Topbow thumbscrew

Post by Adam » Fri Dec 15, 2017 4:07 am

Gotta get new glasses so I can read.
Last edited by Adam on Fri Dec 15, 2017 11:08 am, edited 1 time in total.

User avatar
DavidA
Equipment Operator, Heavy -2nd Class
Equipment Operator, Heavy -2nd Class
Posts: 6305
Joined: Sat Dec 14, 2002 7:15 am
Location: Millbrae, CA
Contact:

Re: Topbow thumbscrew

Post by DavidA » Fri Dec 15, 2017 10:24 am

Chuck:
Can't see your pic, but the EARLY ones were 5/16" NF (A-2901) and the LATE ones were 3/8" NF (A-3719).
See...I told ya someone would chime in with the right answer. :P

Donate now to the Dyslexia Foundation. :D
David Aro - USN SEABEES '66-'70
1941 WILLYS MB-104354
1942 WILLYS MB-131350

User avatar
Chuck Lutz
Gee Addict
Posts: 26829
Joined: Wed Jun 28, 2006 7:00 am
Location: Jeep Heaven

Re: Topbow thumbscrew

Post by Chuck Lutz » Fri Dec 15, 2017 10:57 am

Hope these help you...
Slat Pivot 5-16 Thumbscrew size.jpg
Slat Pivot 5-16 Thumbscrew size.jpg (94.5 KiB) Viewed 1111 times
Top Bow Pivot Screw 5-16s in..jpg
Top Bow Pivot Screw 5-16s in..jpg (29.96 KiB) Viewed 1111 times
Top Bow Pivots Willys A3719 LATE.jpg
Top Bow Pivots Willys A3719 LATE.jpg (44.48 KiB) Viewed 1111 times
Chuck Lutz

GPW 17963 4/24/42 Chester, PA. USA 20113473 (USA est./Tom W.)
Bantam T3-C 1947


Post Reply

Return to “Slat Grill, early Willys MB”

Who is online

Users browsing this forum: No registered users and 68 guests